Eotte



(No Model.) I

R. s. WEROTTE,

DRAWING BOARD.

Patented Oct. 28

UNITED STATES PATENT OFFICE.

RUDOLF SGHMITZ \VEROTTE, OF FINBOROUGH ROAD, COUNTY OF MIDDLE- SEX,ENGLAND.

DRAWING-BOARD.

SPECIFICATION forming part of Letters Patent No. 307,365, dated October28, 1884.

Applicaiion filed April 22, 1984. (N0 model.) Patented in England April28, 1884, No. 6.891.

To alZ whom, it may concern Be it known that I, RUDOLF SoHMrrz WE-ROTTE, a subject of the Queen of Great Britain, residing at FinboroughRoad, in the county of Middlesex, Kingdom of Great Britain and Ireland,have invented new and useful improved means for stretching and holdingpaper or similarmaterial upon drawing-boards, of which the following isa SpGGlfiCafiiOll.

According to my invention, paperor similar material is stretched upon adrawingboard by turning the edges over and clamping them either to itsback or to its straight edge, or to a surface or surfaces in connectionwith its back or straight edges, by holding pieces or strips which arecaused to press against the said back or surface or surfaces inconnection with the straight edge, the paper or other materialintervening. The surface or surfaces against which the holding pieces orstrips press the paper or other material may be either the timber ofwhich the board is formed or a special surface or surfaces provided forthe purpose. Referring to the accompanying sheets of drawings, Figure 1shows one corner of the back of a board constructed according to myinvention; Fig. 2, a part of one side,- Fig. 3, another corner with theclamping device removed; Fig. 4, a third corner showing two clampingdevices, and Fig. 5 a section of the edge of the board.

The holding pieces or strips a a hear, when in position, against thesurfaces 1) 1), formed at the back of the board, and, as shown, they lieby preference each in an angle or recess. \Vhere cutting into thedrawing-board is objectionable, an abutment for the clampingstrips isformed by laying suitably-shaped ledges of Wood under the tighteningdevices and holding-strips, as shown in elevation,

Fig. 6, and in section, Fig. 7.

In order to stretch paper, on a board such as above described, itis,after being thoroughly soaked in water, laid out flat upon a table, 5and the drawing-board is placed on the top of it. The waste at thecorners is cut out and the edges of the paper turned right over theboard with asufficiently broad border to come within the grip of theclamping-pieces. The holding piecesor strips (11 are then laid into theangle or recess b, and by the application of the clamping devices 0 andd the paper is securely gripped all round the board. \Vhen the paper isquite dry and set, one or more of the strips may be removed withoutdisturb ing the paper, and another sheet of tracing paper or cloth maybe stretched over the first.

hat I claim is" r l. Thecombination, with a drawingboard, 6c of holdingpieces or strips for holding upon said board paper or other materialthat has been stretched over its face and edges, and the clampingdevices 0 and d, or their equivalents, to tighten up and secure saidholding pieces or strips, substantially as described, and for thepurposes set forth.

2. The combination, with the drawing board, of the applied surfaces andholding pieces or strips a, for holding upon said board paper or othermaterial that has been stretched over its face and edges, and theclamping devices c and d, or their equivalents, to tighten up and securesaid holding-pieces, substan tially as described, and for the purposesset forth.

RUDOLF SOHMITZ W'EROTTE.

